Monopotassium phosphate

Monopotassium phosphate (KH₂PO₄) is a water-soluble inorganic salt containing potassium and dihydrogen phosphate ions. It is used in fertilizers, food products, and buffering solutions.

Connect

Fertilizer: A material added to soil or plants to supply nutrients and support plant growth. Monopotassium phosphate supplies crops with potassium and phosphorus in a readily soluble form.
Dissolution: The process by which a substance disperses as molecules or ions in a solvent. In water, the salt separates into potassium and dihydrogen phosphate ions.
Potassium: A soft, highly reactive alkali metal with the chemical symbol K. Potassium is the cation in monopotassium phosphate and a major plant nutrient.
Dipotassium phosphate: An inorganic salt with the formula K₂HPO₄, containing two potassium ions per hydrogen phosphate ion. It has a higher potassium-to-phosphorus ratio and is less acidic in water.
Fertigation: The application of dissolved fertilizer through an irrigation system. Its high water solubility makes monopotassium phosphate suitable for fertigation.
Phosphate buffer: A buffer system based on equilibria among phosphoric acid and its conjugate bases. Dihydrogen phosphate participates in the equilibrium that sets the buffer's pH.
Phosphoric acid: A triprotic inorganic acid with the formula H₃PO₄. Removing one proton from phosphoric acid yields the dihydrogen phosphate ion in this salt.
Monosodium phosphate: An inorganic salt with the formula NaH₂PO₄, containing sodium and dihydrogen phosphate ions. It shares the dihydrogen phosphate anion but supplies sodium rather than potassium.
Hydroponics: Plant cultivation using nutrient solutions instead of soil. Hydroponic nutrient solutions can use it as a source of potassium and phosphorus.
Acid–base equilibrium: The reversible transfer of protons between acids and bases in a system. Its phosphate ion can accept or donate protons depending on solution conditions.